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Environmental Engineering in CE

Environmental Engineering in CE
Methyl iso-cynate (MIC) gas (TLV <1 ppm), which caused Bhopal gas tragedy in 1984 falls under the category of __________ toxic gas.

Highly
Moderately
Extremely
Very extremely

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Environmental Engineering in CE
Foaming and priming in boiler operation can be reduced by reduction in __________ in feed water.

All of these
Color (Hazen)
Total solids
Turbidity

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Environmental Engineering in CE
Which of the following radioactive wastes emits all α, β & γ rays and hence is the most hazardous of all radioactive emitters?

Ra-226
Sr-90
I-131
Au-198

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Environmental Engineering in CE
Ozone is

A primary pollutant
Both B & C
Impervious to ultra-violet rays
A secondary pollutant

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Environmental Engineering in CE
Inorganic impurities causing water pollution is

Carbohydrates
Salts of metals
Fats
Protein

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Environmental Engineering in CE
Brown spots in fabrics will be caused by washing with water containing large amount of .

Iodine
Iron
Bromine
Zinc

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